MS3989/MS3989N quad DMOS full-bridge driver

PublishTime：2021-01-20

The MS3989/MS3989N is a quad DMOS full-bridge driver capable of driving up to two stepper motors or four dc motors. Eachfull-bridge output is rated up to 1.2 A and 36 V. The MS3989/MS3989N includes fixed off-time pulse width modulation (PWM) current regulators, along with 2- bit nonlinear DACs (digital-to-analog converters) that allow stepper motors to be controlled in full,half, and quarter steps, and dc motors in forward, reverse, and coast modes. The PWM current regulator uses mixed decay mode for reduced audible motor noise, increased step accuracy, and reduced power dissipation.
Internal synchronous rectification control circuitry is provided to improve power dissipation during PWM operation. Protection features include thermal shutdown with hysteresis, undervoltage lockout (UVLO) and crossover current protection.Special power up sequencing is not required.
The MS3989/MS3989N is supplied in two packages QFN36，QFP48,with exposed power tabs for enhanced thermal performance.
●Featues and benifits：
■36 V output rating
■4 full bridges
■High current outputs
■3.3 and 5 V compatible logic supply
■Synchronous rectification
■UVLO protection
■Thermal shutdown circuitry
■Crossover-current protection

Brand of Product：	Relmon
Part#：	MS3989 、 MS3989N More Part#
Product Category：	quad DMOS full-bridge driver More
Application：	More
Data Type：	Datasheet More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：	QFN36;LQFP48;QFP48
Language：	English Chinese Chinese and English Japanese
Date of Creation：	2017.04.28
Version Number：	Version：1.2
Data Encoding：
Data Size：	1.2 MB

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